Syringe-pump.



AJJ. MiCKLEY.

SYRINGE PUMP.

APPLICATION man was. 1915.

1, 182,923. Patented May 16, 1916.

WlTNESSES 4 zww gfgamz.

ALBERT J. MICKLEY, OF NEW YORK, N. Y.

SYBINGE-PUMP.

Specification of Letters Patent.

Patented Maylfi, 1916.

Application filed August 5, 1915. Serial No. 43,773.

To all whom it may concern:

Be it known that I, ALBERT J. MICKLEY, a citizen of the United States, residing in the city, county, and State of New York, have invented a new and useful Syringe- Pump, of which the following is a specification.

My invention consists of a pump, more particularly for heavy and viscous fluids, the same comprising a ported nozzle having an outlet on an end thereof, a valvedtubular-piston in said nozzle, a barrel movable in an end portion of said nozzle, and a main piston in said barrel, said tubular piston being connectible with said barrel, whereby by the operation of said main piston, the ports of the nozzle may be opened and closed alternately, so that the fluid may enter first the ports of the nozzle and the tubular piston, and next, be syringed through the outlet to a place of service. Provision is made to rotate the tubular piston so that its valve will first close tightly on its seat, and next, turn thereon, so as to lock the valve to its seat when ejecting the fluid.

The invention is satisfactorily illustrated in the accompanying drawing, but the important instrumentalities thereof may be varied, as long as they are, included in the scope of the claims.

Figure 1 represents a side elevation of a syringe pump embodying .my invention. Fig. 2 represents a longitudinal section thereof. Fig. 3 represents a transverse section of a portion on the line 00-00 Fig. 2. Fig. 4: represents a transverse section on the line yy Fig. 1.

Similar numerals of reference indicate corresponding parts inv the figures.

Referring to the drawing, 1 designates a tubular nozzle or exterior casing which in the position shown has connected with its lower end the tubular or apertured plug 2, the upper end of which is formed with a ground valve-seat 3 thereon. v The lower portion of said plug is inclosed by the nose a, which has in-it the'bore 5,]which is in communication with the'bore of the plug 2,

said nose with its bore 5 comprising the exit nozzle proper of the pump.

In the wall of the nozzle 1 are the ports 6 which are incommunication with the interior of said nozzle. WVithin the nozzle 1 is the supplementary piston or tube 7 which is slidable in the former, and its lower end is formed with the valve 8, the seat of which is on the plug 2, which has been hereinbefore described.

The upper portion of the nozzle 1 is widened forming the cylinder 9 in which is freely fitted the lower portion of the barrel 10, so as to be movable therein, said barrel having the tubes 7 communicating with it and containing the piston 11 whose rod 12 passes through the closing cap 13 of the barrel, said rod being of angular form in its longitudinal direction and being slidable in a similar opening in the guide plate 14, which is secured to the end of the barrel 10 under said cap, whereby improper rotation of the rod, and consequently of the piston 11 in the barrel f 10 is prevented, but when required the cylinder may be rotated by said piston rod, owing to the angular nature of the latter, and the similar shaped opening in the said guide plate 4, through which latter, said rod is slidable.

Passing transversely through the nozzle 1 and tube 7 and connected firmly with the side of the tube 7 is the cross pin or bar 15, and in the side of the nozzle 1 are the deflected slots 16 which receive the end portions of said pin, said portions being adapted to play in the different limbs of said slots 16 according to the motions of the barrel 10. Y When the parts are in position, as in Fig. 1, the valve 8 occupies its seat 3, and so is closed. The side of the inner tube or piston 7 closes the ports 6 while the end portions of the cross pin 15 occupy the lower, camshaped limbs of the slots 16. The cylinder 9 forms means for handling and operating the pump, but if desired, a suitable hand grip or finger piece may be connected with said cylinder to be employedforthe same purpose.

It will be understood that the pump is adapted for use with various kinds of oil, paint, spraying material for insect-destroying, and with heavy and viscous fluids generally.

The operation is as follows: Place the nozzle into the fluid with which the instrument is to be charged and bear down on the cylinder 9 (or pull up on the handle 17) the friction of the piston 11 against the barrel 10 will cause the latter to move in the same direction, and with the handle 17 until the cross pin reaches the top extremity of the vertical slot in tube 1, thereby automatically opening the ports 6 in tube 1 to the passage of the fluid. WVhen the handle 17 is withdrawn to the limit and the barrel 10 charged, the cylinder 9 is drawn upward, and with it the nozzle, until the cross pin 15 reaches the bottom of the vertical portion of the slot and then slightly rotated, so that the pin enters the cam-shaped portion of the slot 16, thereby closing the ports and locking the valve 8 in position on the seat 3. Fur ther pressure downward on the handle 17 while the operator still grasps the cylinder 9 ejects the fluid and brings the various parts to rest in their relation, shown in Fig. 1. The cross pin traveling in the cam-shaped portion of the slot serves to lock the valve 8 on the seat, while the vertical travel of the pin regulates the lift from the seat, and the amount of travel of the valve 8 past the ports 6. At the oint of the lower terminal of the nozzle 7 and the flange of the plug I introduce a fiber washer or gasket, the thickness of which can be varied to establish the proper alining of the pin 15 in the camshaped portion of the slot, when the valve 8 is locked without requiring careful workmanship in making the parts.

The shape of the nose 4 may be varied to suit the uses to which the instrument is to be put. I

It is to be noted that my pump contains no loose valves (metal or leather) balls or springs, and that, for the purpose of charging, the pump of the nozzle is adapted to pass throughordinary openings provided in the cans in which oil, etc, is sold, contained and handled, and also to reach far enough into the can to withdraw the contents until emptied.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is:

1. A syringe pump of the character stated, comprising a nozzle having a lateral inlet and terminal outlet, a tubular piston movable therein and serving as a valve to control said lateral inlet, the upper portion of said nozzle forming a cylinder, a slidable barrel 1n said cylinder, a

guide plate on said barrel having an angular opening therein, a piston in said barrel, a rod connected with said piston and slidable through said opening and of angular cross section whereby said barrel and tubular piston may be rotated by said rod, and locking means controlled by said tubular piston and actuated by the rotation thereof.

2. An injector of the character stated composed of a barrel, a main piston therein, a nozzle in which said barrel is movable, and a supplementary tubular piston in said nozzle, the samebeing connected with and in communication with said barrel, said nozzle having an inlet port in its side controlled by said piston, and an outlet, independent of said inlet in itsend opposite to said barrel.

3. An injector of the character stated composed of a nozzle, a supplementary tubular piston movable in said nozzle and serving as a valve, a barrel in said nozzle and communicating with said tubular piston said nozzle an inlet port in its side adapted to be covered and uncovered by said tubular piston and an outlet independent of said inlet opposite to said barrel, and a piston reciprocable in said barrel.

4:. An injector of the character stated having a barrel, a nozzle, a tubular piston therein serving as a valve and communicating with said barrel, said nozzle having within the same a seat for said piston and in its side an inlet port adapted to communicate with said piston in one position of the latter, and in an end an outlet leading from said iston, said outlet being independent of said inlet, means for rotating said piston as it is moved to and from its seat, and a reciprocatory piston independent of said tubular piston and reciprocable in said barrel.

5. An injector of the character stated having a barrel, a nozzle, a tubular piston therein, serving as a valve and communicating with said barrel, means for operating the tubular piston in opposite directions, said nozzle having within the same a seat for said piston, and in its side an inlet port leading into said piston in one position thereof, and in an end an outlet independent of said inlet leading from said piston, said inlet port being adapted to be opened and closed by said piston, and a cross pin connected with said nozzle and passing through said tubular piston, the latter being formed with a deflected slot in which the ends of said pin are adapted to play and a reciprocatory piston independent of said tubular piston and reciprocable in said barrel.

6. In a syringe pump, a nozzle, the same having in its side wall a deflected slot, an apertured plug on the lower end of said nozzle, a tubular piston in said nozzle, said nozzle having a port in the wall thereof, a

" shoulder of said plug forming a seat for said valve, a barrel whose lower portion is fitted freely in the upper portion of said nozzle and connected with said tubular plunger,

means on said tubular piston cooperating With said slot to lock the tubular piston 13 valve on its seat, a piston in said barrel, and a rod for said piston.

ALBERT J. MIGKLEY. Witnesses:

WILLIAM N. SHANNON, CHAS. P. SHRINLEY.

Copies of this patent may be obtained tor five cents each, by addressing the Commissioner of Patents Washington, D. G." 

